On Mon, Mar 19, 2007 at 11:52:02AM -0400, Stuart D. Gathman wrote:
On Sun, 18 Mar 2007, Frank Ellermann wrote:
Stuart D. Gathman wrote:
I'm not convinced that a label with no dot is a FQDN.
I'll have to look up the definition.
You really think TLDs are no FQDNs ? The best explanation
I know (and for that reason also an informative reference
in RFC 4408) is http://tools.ietf.org/html/rfc3696#section-2
| Consequently, purported DNS names to be used in applications
| and to locate resources generally must contain at least one
| period (".") character. Those that do not are either invalid
| or require the application to supply additional information.
| Of course, this principle does not apply when the purpose of
| the application is to process or query TLD names themselves.
Since the purpose of SPF is *not* to process or query TLD names
themselves, I'd say I'm more convinced than ever that TLDs are no
FQDNs in the context of SPF. Thanks for quoting that.
for the museum. example:
The machine with IP address 18.104.22.168 has name musedoma.museum.
It ought to say "HELO musedoma.museum" (if sending mail at all, dunno).
Should its PTR record point to "museum.", the situation would be
A quick scan (i.e. not necessarily complete or correct) reveils the following
hostnames being in use when resolving TLDs
(dig +short $tld; dig -x $result # not compensating for timeouts and ignoring
The host with name "ws." should, if it sends mail, say "HELO ws".
It should probably list policy "v=spf1 ip4:22.214.171.124 -all" or "v=spf1 a
at domain "ws.".
There does not seem to be running a mailserver at this domain, at least
not one I can reach.
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